ABB 1SDA123544R1 Moulded Case Circuit Breaker - IEC 60947-2
Part Number: 1SDA123544R1
Quick Summary
ABB 1SDA123544R1 Moulded Case Circuit Breaker protects DC circuits in industrial automation panels. Engineers often confront wiring complexity, arc risk, and diagnostic gaps when protecting DC busses; this breaker simplifies maintenance and improves safety. It aligns with IEC 60947-2 and GB/T 14028.2, carries CE conformity, and supports front-terminal installation for quick panel wiring. Used with front terminals and a thermomagnetic release, it delivers reliable DC protection with a compact footprint for cost-effective panel design. With ABB EcoSolutions, a 32 A rating, and a robust design, this device helps reduce downtime and ensure regulatory compliance across global facilities. Its 3P DC configuration suits high-current DC distribution in control cabinets.
Product Information
Extended Description
1SDA123544R1 ABB: C.BREAKER TMAX XT2L 160 DC FIXED THREE-POLE WITH FRONT TERMINALS AND THERMOMAGNETIC RELEASE TMD R 32
ABB EcoSolutions
Yes
ABB Site Meeting Group Waste To Landfill Target
UL 2799 Zero Waste To Landfill Validation available
End Of Life Disassembling Instructions
Disassembly instructions Tmax XT XT2 TM
Environmental Product Declaration - EPD
EPD Tmax XT XT2 TM (CN)
Recyclability Rate of the Product acc. to EN45555
Design for Closing Resource Loops - Standard EN45555 - 55.7 %
REACH Declaration
REACh Declaration ABB Sace circuit breakers
RoHS Information
RoHS Declaration ABB Sace circuit breakers
RoHS Status
Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019
Conflict Minerals Reporting Template (CMRT)
Document availability on demand
Customs Tariff Number
85362000
Product Net Width
90 mm
Product Net Height
130 mm
Product Net Depth / Length
82.5 mm
Product Net Weight
1.2 kg
Product Name
Moulded Case Circuit Breaker
Product Type
CB
Version
F
Current Type
DC
Mechanical Durability
25000 cycle | ;240 cycles per hour
Number of Poles
3P
Power Loss
at Rated Operating Conditions per Pole 2.57 W
Rated Current (In)
32 A
Rated Impulse Withstand Voltage (Uimp)
8 kV
Rated Insulation Voltage (Ui)
1000 V
Rated Operational Voltage
500 V DC
Rated Service Short-Circuit Breaking Capacity (Ics)
(250 V DC) 2 Poles in Series 85 kA | (500 V DC) 3 Poles in Series 85 kA
Rated Ultimate Short-Circuit Breaking Capacity (Icu)
(250 V DC) 2 Poles in Series 85 kA | (500 V DC) 3 Poles in Series 85 kA
Rated Uninterrupted Current (Iu)
160 A
Release
TMD
Release Type
TM
Short-Circuit Performance Level
L
Standards
IEC 60947-2 | GB/T 14028.2
Sub-type
XT2
Terminal Connection Type
Fixed Circuit-Breakers
Declaration of Conformity - CE
EC Declaration of Conformity Tmax XT2
Instructions and Manuals
Installation instructions XT2 DC IEC
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)
DC rated current of 32 A and a 3P fixed-pole design provide robust protection for medium‑size DC circuits, reducing nuisance trips and safeguarding drives from overload events. The fixed poles ensure solid, vibration-resistant connections in panel environments, while the compact footprint fits tight control cabinets. This configuration is well-suited for automation controllers, servo drives, and DC bus protection in industrial applications. Rated operational voltage of 500 V DC enables safe operation across typical automation DC busses, preserving insulation margins and supporting uptime in harsh environments. The device maintains reliable interruption performance during fault events, ensuring consistent protection even in high-energy DC systems. It also supports integration with standard ABB accessories and wiring schemes, facilitating quick retrofit in legacy panels. Thermomagnetic release (TMD) with TM action enables rapid interruption during short circuits, limiting arc duration and protecting conductors. The design is optimized for DC switching where arcing behavior differs from AC, improving arc-quenching reliability and reducing contact wear. This is particularly valuable in motor drives, DC distribution, and renewable energy interfaces where fast isolation minimizes downtime. Front-terminal design simplifies wiring, testing, and field maintenance, reducing assembly time and enabling flexible panel layouts. OEMs and service teams benefit from quicker commissioning and easier fault diagnosis. Compliance and lifecycle support include IEC 60947-2 and GB/T 14028.2 adherence, with a CE declaration for global use. The unit is rated for 25,000 mechanical durability cycles at 240 cycles per hour and offers a compact footprint (90 mm W x 130 mm H x 82.5 mm D) that weighs 1.2 kg, facilitating scalable deployment. These attributes translate to lower total cost of ownership through longer service life, predictable maintenance intervals, and easier obsolescence planning.
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FAQs
Yes. The device features a 3P fixed-pole arrangement and front-terminal connection, designed for easy wiring, testing, and reliable mechanical stability in control panels. Its dimensions (90 mm W x 130 mm H x 82.5 mm D) fit typical automation cabinets while maintaining robust electrical isolation and quick commissioning workflows.
Key ratings include In = 32 A, Ui = 1000 V insulation, Uimp = 8 kV, and Ics/Icu values appropriate for 250 V DC and 500 V DC configurations. This enables safe operation across DC bus protection scenarios, with a short-circuit capacity of up to 85 kA in the specified pole arrangements, ensuring strong fault isolation.
Absolutely. With a rated operational voltage of 500 V DC and robust short-circuit protection, the ABB 1SDA123544R1 is suitable for solar DC distribution and other DC microgrid protections. Its front-terminal design supports straightforward wiring in compact inverters or DC-DC converter interfaces, while its 32 A rating handles common DC string or bus segments efficiently.
The device adheres to IEC 60947-2 and GB/T 14028.2, ensuring compatibility with international and Chinese standards. It also carries CE conformity, supporting compliance in global markets. These certifications help streamline procurement and reduce regulatory risk in multinational projects.
The unit offers a mechanical durability rating of 25,000 cycles at 240 cycles per hour, supporting long service life under typical control-room duty cycles. Front-terminal access simplifies inspection and wiring rework, while the compact form factor and fixed terminals minimize field service complexity. Plan regular inspection of contacts and terminals to sustain performance in high-energy DC environments.